Except when it becomes a "thing", in the workplace, in executive circles, down the business chain: people are talking about this; the board has heard about Zhu

Except when it becomes a "thing", in the workplace, in executive circles, down the business chain: people are talking about this; the board has heard about Zhu and LSD from people outside the company; an employee caught him "doing it" and mentioned it to HR who brought it to the board's attention. Someone said he sounded "funny" in the last board meeting. Etc. When it's a "thing", and this "thing" is, after all, illegal, it cannot be ignored because ignoring it becomes an active decision to condone or even collude.